EduSahara™ Worksheet

EduSahara™ Worksheet

Name : Chapter Based Worksheet

Chapter : Factors and Multiples

Grade : ICSE Grade VIII

License : Non Commercial Use

Question 1

1.

Find the H.C.F of
14
18

,

6
8

,

9
16

(i)

1
142
(ii)

1
144
(iii)

(
-1
144
)
(iv)

1
48
(v)

1
146

Question 2

2.

Find the smallest perfect square which is divisible by each of the numbers 8,10,6

(i)

960
(ii)

3600
(iii)

3602
(iv)

7200
(v)

1201

Question 3

3.

Find the HCF of
{80,280}

(i)

43
(ii)

39
(iii)

41
(iv)

40
(v)

37

Question 4

4.

Find the L.C.M of
9
18

,

48
16

,

45
16

(i)

361
(ii)

180
(iii)

359
(iv)

720
(v)

360

Question 5

5.

Find the HCF of
{24,248,256}

(i)

7
(ii)

9
(iii)

8
(iv)

11
(v)

6

Question 6

6.

Find the L.C.M of
9
24

,

45
25

(i)

44
(ii)

48
(iii)

46
(iv)

42
(v)

45

Question 7

7.

Find all common factors of 10 , 6 and 50

(i)

{1,3}
(ii)

{1,2,0}
(iii)

{1,2}
(iv)

{2,0}
(v)

{1,2,6}

Question 8

8.

Find the prime factorization of
1584

(i)

2 4

✕

3 2

✕

9
(ii)

2 4

✕

3 2

✕

10
(iii)

2 4

✕

5 2

✕

11
(iv)

2 5

✕

3 2

✕

11
(v)

2 4

✕

3 2

✕

11

Question 9

9.

Which of the following numbers is divisible by 9?

(i)

6221
(ii)

6217
(iii)

6219
(iv)

6220
(v)

6218

Question 10

10.

Find the prime factorization of
9856

(i)

2 4

✕

7

✕

11
(ii)

2 6

✕

7

✕

11
(iii)

2 7

✕

7

✕

11
(iv)

4 7

✕

7

✕

11
(v)

2 7

✕

7

✕

11 2

Question 11

11.

Find all common factors of 45 and 1

(i)

{1,9}
(ii)

{15}
(iii)

{1}
(iv)

{0}
(v)

{1,0}

Question 12

12.

What is the number that divides
{4034,1389,4149}
leaving a remainder of
9

(i)

117
(ii)

115
(iii)

114
(iv)

116
(v)

113

Question 13

13.

The factors of 17 =

(i)

{1,17,2}
(ii)

{1,16}
(iii)

{1,17}
(iv)

{2,16}
(v)

{1,17,16,2}

Question 14

14.

Find the HCF of
{12,48,21,44}

(i)

0
(ii)

1
(iii)

4
(iv)

2
(v)

(-2)

Question 15

15.

Find all common factors of 30 , 34 and 32

(i)

{2,5}
(ii)

{1,2,30}
(iii)

{1,2,34}
(iv)

{1,2}
(v)

{2,34}

Question 16

16.

The common multiples of 9 and 5 =

(i)

{45,90,180,154}
(ii)

{45,90,135,196}
(iii)

{90,135,180,174}
(iv)

{45,90,135,180}
(v)

{90,135,180,224}

Question 17

17.

Which of the following numbers is divisible by 5?

(i)

1180
(ii)

1181
(iii)

1179
(iv)

1178
(v)

1182

Question 18

18.

Find the prime factorization of
78

(i)

2

✕

3

✕

12
(ii)

2

✕

3 2

✕

13
(iii)

2

✕

3

✕

11
(iv)

2

✕

3

✕

15
(v)

2

✕

3

✕

13

Question 19

19.

Find the number of prime factors of
50

(i)

4
(ii)

3
(iii)

2
(iv)

1
(v)

0

Question 20

20.

Find the LCM of
{9,4}

(i)

34
(ii)

38
(iii)

37
(iv)

36
(v)

35

Question 21

21.

Find the product of LCM and HCF of
{4,25}

(i)

100
(ii)

101
(iii)

98
(iv)

102
(v)

99

Question 22

22.

Find the HCF of
{390,105,570,330}

(i)

15
(ii)

12
(iii)

17
(iv)

16
(v)

14

Question 23

23.

Find the HCF of
{30,48,44}

(i)

4
(ii)

3
(iii)

1
(iv)

2
(v)

(-1)

Question 24

24.

Find the H.C.F of
40
22

,

35
40

(i)

5
442
(ii)

3
440
(iii)

5
438
(iv)

7
440
(v)

1
88

Question 25

25.

Find the LCM of
{192,132,60,204}

(i)

179517
(ii)

179519
(iii)

179522
(iv)

179521
(v)

179520

Assignment Key